Motion picture projector with automatic rewind

ABSTRACT

A motion picture projector with automatic rewind, comprising: a wheel adapted to rotate at a constant speed for feeding film, a mechanism operative to relieve the engagement between the film and said wheel and to cause the retreat of both a pressure plate of a film gate and a film drive claw from the film face, and a mechanism operative to cause the change-over of the connections of power source switches to a driving motor by the actions of members adapted to be actuated by the resultant tension produced in the film, causing the interruption and subsequent resumption of motion of said driving motor so as to rotate said supply reel at high speed in the direction in which the film is taken up by said supply reel.

[451 Apr. 25, 1972 United States Patent Hayami [54] MOTION PICTUREPROJECTOR WITH AUTOMATIC REWIND m a M w [72] Inventor: Tadao Hayami,Tokyo, Japan m a m o R M 1. e f m m K Assignee: Kabushiki Kaisha Koparu,Tokyo-to,

Japan Primary ExaminerStanley N. Gilreath [22] 1970 AssistantE.taminerWerner H. Schroeder [21] 20,277 Attorney-Cushman, Darby &Cushman Appl. No.:

[57] ABSTRACT A motion picture projector with automatic rewind,comprising: a wheel adapted to rotate at a constant speed for feeding[30] Foreign Application Priority Data Mar. 22, 1969Japan......................

film, a mechanism operative to relieve the engagement between the filmand said wheel and to cause the retreat of [52] US.Cl..............................242/l89, 242/71.6, 242/200,

242/205, 352/124 .G03b l/22, G03b l/58 both a pressure plate ofa filmgate and a film drive claw from the film face, and a mechanism operativeto cause the change- [58] Field of Search.,................242/l86, 189,190, 193, 200,

over of the connections of power source switches to a driving motor bythe actions of members adapted to be actuated by the resultant tensionproduced in the film, causing the inter- References Cited ruption andsubsequent resumption of motion of said driving motor so as to rotatesaid supply reel at high speed in the direction in which the film istaken up by said supply reel.

UNITED STATES PATENTS .242/189 6 Claims, 11 Drawing Figures 3,240,5503/1966 Mitchell etal..... 3,300,155 l/l967 V WWO 2 351 6 6 23 1 lllli iPATENTEDAPR 25 I972 SHEET 10F 4 FIG. 3

FIG. 2

'PATENTEDAPRZSIQYZ 3.658.276

SHEET 2 CF 4 FIG FIG. '5

PATENTEDAPR 2 5 I972 SHEET 3 CF 4 FIG. 7

PATENTEU APR 2 5 I972 SHEET u or 4 rlllzll 4 C I 5 3 7 M I48 Fl G. 9

FIG. ION

BACKGROUND OF THE INVENTION a. Field of the Invention The presentinvention is concerned with a motion picture projector with an automaticrewinding mechanism, and more particularly, it relates to a motionpicture projector with an automatic rewind having a mechanism which isoperative so that, after the'completion of projection, the film isautomatically rewound quickly around the supply reel.

b. Description of the Prior Art in conventional In general, in caserewinding of the film is performed in a motion picture projector, it isnecessary that the engagement between the film and the wheel assignedfor feeding said film be relieved and also that the pressure plate ofthe film gate and the film driving claw be caused to retreat from thefilm face, in order to effect a smooth travel of the film which isrewound. These operations which were necessary in rewinding the filmwere performed manually in the past. For example, they were performed inthe following manner is conventional motion picture projectors. A knobfor rewinding is manipulated. whereupon, the mechanism which isinterlocked with said knob is actuated. A pressure plate and a filmdriving claw which are both interlocked with said mechanism are causedto retreat from the film face. Also, in a conventional motion pictureprojector of the simple type, the film which has been wound around atake-up reel is delivered directly to a supply reel from said take-upreel without passing through the path of film for projection, so thatthe terminal end of the film is engaged again by the supply reel. Thus,the film is rewound around the supply reel. In the case of the former,however, the arrangement described in connection therewith was limitedto projectors of the sprocket-less type. Even when the aforesaidrequirements were met in a motion picture projector of the sprockettype, the performance required the use of a complicated mechanism forrelieving the engagement between the film and the sprocket teeth. Also,the change-over of said mechanism was done manually, and therefore, thehandling of the projector was troublesome. In the case of the latterprojector, on the other hand, the film which has been projected requiredto be rewound around the supply reel. This operation required additionallabor. It has, therefore, been desired to develop an improvedarrangement which insures that the film which has been wound around thetake-up reel be automatically rewound around the supply reel.

SUMMARY OF THE INVENTION It is, therefore, a primary object of thepresent invention to provide a motion picture projector with automaticrewinding mechanism for rewinding the film around the supply reel, uponcompletion of a projection, from the take-up reel on which the film hasbeen wound.

Another object of the present invention is to provide a motion pictureprojector having a mechanism which is operative so that the film whichhas been wound around the take-up reel is rewound automatically aroundthe supply reel without virtually changing the film path leading fromthe supply reel to the take-up reel which was followed by the filmduring the projection.

Still another object of the present invention is to provide a motionpicture projector having a mechanism which is operative so that theautomatic rewinding mechanism is actuated by the tension which isproduced in the film between the film driving claw and the supply reelto which the terminal end of the film is fixed, upon completion of aprojection.

Yet another object of the present invention is to provide a motionpicture projector having a mechanism which is operative so that, uponcompletion of a projection, the engagement between the film and thewheel for feeding this film is relieved and also that the pressure plateof the film gate and the film driving claw are both caused to retreatfrom the film face.

The foregoing and other objects as well as the characteristic featuresof the present invention will become more apparent and more readilyunderstandable by reading the following description and the appendedclaims when taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmentary sectional leftside elevational view of a sound motion picture projector embodying theinvention, showing the filmguiding mechanism in its operative position;

FIG. 2 is a fragmentary enlarged sectinal view taken along the linelI-II in FIG. 7;

FIG. 3 is a plan view of an actuator plate;

FIG. 4a is an enlarged plan view ofa plate for opening and closing apressure plate;

FIG. 4b is an enlarged side elevational view of said plate for openingand closing the pressure plate;

FIG. 5 is an enlarged fragmentary sectional view of the film alignmentassembly taken along the line V-V in FIG. 1;

FIG. 6 is a fragmentary sectional view of the assembly mechanism ofshaft blocks for a supply and takeup reels, taken along the line VI-VIin FIG. 7;

FIG. 7 is a fragmentary sectional view of the projector showing theinternal structure of said assembly mechanism in its still position;

FIG. 8 is a fragmentary view of a gear block for changingover the speedof projection, taken along the line VIII-VIII in FIG. 7;

FIG. 9 is a fragmentary sectional view of the structure forchanging-over the projection speed, taken along the line IX- IX in FIG.7; and

FIG. 10 is a fragmentary view of the shuttle mechanism and the filtermeans, taken along the line X-X in FIG. 7.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring first to FIG. 1, thereis shown a film guiding section in a sound motion picture projector.

The housing (not shown) of said projector has a side wall 1 from whichprojects a rotatable shaft 2 for securing a supply reel 3 thereto. Afilm 4 is seen in the state of being wound around the supply reel 3. Anupper sprocket wheel 5 for feeding the film 4 is secured to a rotatableshaft 6 which projects outwardly from said side wall 1. A film feedingmember 7 has shafts 10, 11 extending outwardly from the side wall I, andupper pressure rollers l2, 13 are rotatably mounted on these shafts l0,11, respectively. Said film feeding member 7 is rotatably mounted on ashaft 8 extending outwardly from said side wall 1 in such a way thatsaid member 7 is urged to rotate clockwise by a spring 9. An upper guideroller 14 is rotatably mounted on a shaft 16 extending outwardly fromthe swingable free end of a member (not shown), the other end of saidmember being secured to said side wall 1. Another upper guide roller 15is rotatably mounted on a shaft 17 extending outwardly from said sidewall 1. A film gate plate 18 is secured to said side wall 1 integrallytherewith. As will be understood best from FIG. 5, a pressure plate 19has pins 20, 21 which are received in through-holes 66a, 66b,respectively, formed in a receiving plate 66 which, in turn, is securedto said film gate plate 18. The film 4 is urged against said film gateplate 18 by the force exerted by springs 22 and 23. As will be bestunderstood from FIGS. 5 and 10, a claw member 24 is incorporated in afilm alignment assembly. A lower guide roller- 25 is rotatably mountedon a shaft 26 extending outwardly from said side wall 1. A lowersprocket wheel 27 is secured to a shaft 28 which extends outwardly fromsaid side wall I and which is adapted to rotate at a constant speed. Alower pressure rollers 29 and 30 for urging the film 4 against saidsprocket wheel 27 are rotatably mounted on a shaft extending from oneend of a lever 31 and on a shaft 33 extending from one 32a of the twoarms 32a and 32b ofa lever 32, respectively. A guide roller 34 isrotatably mounted on a shaft 35 which extends from the other 32b of thetwo arms of said lever 32.

An operating plate 36 is rotatably mounted on a shaft 37 which extendsfrom said side wall 1, and this operating plate 36 is urged to rotateclockwise by the action of a spring 38. Shafts 39, 40 and 41 extend fromthat surface of said operating plate 36 seen in the foreground of FIG.1, and pins 42 and 43 extends from the rear side of said operating plate36. Said operating plate 36 is of a notch 36a formed locally therein.Said levers 31 and 32 are pivotably attached to said shafts 39 and 40,respectively. These two levers 31 and 32 are caused to pull themselvestoward each other by the action of a spring 44 provided therebetween.Said lower pressure rollers 29 and 30 jointly urge the film 4 againstthe lower sprocket wheel 27. Stoppers 45 and 46 for the levers 31 and32, respectively, extend from said operating plate 36. A lever 47 ispivotably mounted on said shaft 41 and this lever 47 is urged to rotateclockwise by the action of a spring 48. A head attachment plate 51 towhich an erasing head 49 and a recording and reproducing head 50 areboth secured is rotatably mounted on a shaft 52 which extends from thefree end of said lever 47. A stopper 53 for said lever 47 extends fromsaid operating plate 36. A pin 54 extending from the rear side of thefilm feeding member 7 projects through said side wall 1. This pin 54engages the lower face of a bent portion 55a formed at the upper end ofa coupling plate 55, as will be seen in FIG. 7. As is best shown in FIG.2, a holding lever 56 having two arms 56a and 56b is pivotably mountedon a shaft 58 which extends from a supporting plate 57 which is securedto said side wall 1, and

this holding lever 56 is urged to rotate counter-clockwise by the actionof a weak spring 59. An arm 56a of said lever 56 is engageable with alower end portion 55b of said coupling plate 55, whereas the arm 56b ofsaid lever 56 is engageable with the notch 36a of said operating plate36. As will be best understood from FIG. 1, an actuator plate 60 shownin FIG. 3 is able to make vertical sliding movement because of the factthat upper and lower guide pins 61 and 62 extending from said side wall1 are received in upper and lower elongated slots formed in saidactuator plate 60. Said actuator plate 60 is normally urged downwardlyby a spring 63. Said actuator plate 60 has formed, in the upper endportion thereof, anarm 60a assigned to engage with said pin 54, and italso has, formed in an intermediate portion thereof, two projections 60band 600' which are engageable with two protrusions 64e and 64f,respectively, of a plate 64 intended for opening and closing saidpressure plate 19, and furthermore, it has, formed in the lower endportion thereof, a work face 60d which is engageable with said pin 42.The plate 64 for opening and closing the pressure plate 19, shown inFIGS. 4a and 4b, is provided further with pin-receiving portions 64a and64b, elongated slots 64c and 64d, and a bent arm 64g, in addition tosaid protrusions 64c and 64f. As will be best understood by referring toFIG. 5, the plate 64 for opening and closing the pressure plate 19 ispivotably mounted onto a receiving plate 66 'fixed to said film gateplate 18, by a hinge pin assembly which is comprised of a pin-receivingportion of said receiving plate 66, a hinge pin 65 and saidpin-receiving portions 64a and 64b. Said pins 20 and 21 are received insaid elongated slots 64c and 64d of the plate 64, respectively. Theprotrusions 64c and 64f of said plate 64 are arranged so that they areengageable with the projections 60b and 60c, respectively, of saidactuator plate 60, and that the foremost end portion 64h of the bent arm64g of said plate 64 is engageable with said claw member 24. The clawmember 24 which is provided with a claw 24a formed at its foremost end,an arm 24b and ball-receiving portions 24c and 24d, respectively, iscapable of moving moving vertically (in a direction perpendicularrelative to the sheet of drawing in FIG. 5) because of the fact thatsaid ball-receiving portions 240 and 24d engage balls 67a and 67b,respectively, which are placed in guide grooves 1a and lb provided insaid side wall 1, respectively. Also, said claw member 24 is able toswing sideways about balls 67a or 67b serving as the fulcrum. Anauxiliary lever 68 shown in FIG. 1 is urged to rotate counter-clockwiseby a spring 70 about a shaft 69 extending from said side wall 1. Thefree end 68a of said auxiliary lever 68 engages the pin 43 of saidoperating plate 36. A stopper plate 71 for limiting the rotation of theoperating plate 36 is fixed to said side wall 1. A micro-switch 72 whichis secured to the side wall 1 and which normally is in the closed stateis rendered to the open state whenever a pin plunger of saidmicro-switch 72 is pushed by the film feeding member 7. A micro-switch73 which is secured to said side wall 1 is rendered from the open stateto the closed state whenever its pin plunger of said micro-switch 73 ispushed by said auxiliary lever 68. These two switches 72 and 73 areconnected in parallel with each other. The combination of these twoswitches connected in parallel is connected between a motor 99 shown inFIGS. 7 and 8 and a power source. A lens housing 74 and a lamp housing75 are both secured to the side wall 1. As shown in FIGS. 6 and 7, saidshaft 2 rotatably passes through a bearing 1c which extends from saidside wall 1. This shaft 2 is provided with a key 2a. A pulley 76- isrotatably mounted on said shaft 2. A disk 77 having a diameter identicalwith that of said pulley 76 is rotatably mounted on said shaft 2. Thisdisk 77 is of a key groove 77a for engagingly receiving the key 2atherein. Said disk 77 is urged toward said pulley 76 by a spring 78wound around the shaft 2. A frictional member 79 is sandwiched betweensaid pulley 76 and said disk 77. A resilient roller 80 can be broughtinto contact simultaneously with both peripheral faces of the pulley 76and the disk 77. A series of members for the take-up reel, i.e., a shaft81, a bearing 1d, a key 81a, a pulley 82, a disk 83, a key groove 83a, aspring 84, a frictional member 85 and a resilient roller 86, arearranged in the same relationship with the series of members describedabove in connection with the shaft 2.

As shown in FIG. 7, an intermediate lever 87 which has an elongated slot87b formed in one end portion 870 and a work face formed on the otherend portion 870 is attached to the side wall 1 in such a way that a pin88 extending from the side wall 1 is received in said elongated slot87b, so that said intermediate lever 87 is allowed to move sideways. Theend portion 870 rests on the face of the bent portion 55a of thecoupling plate 55. A lever 89 having two arms 89a and 89b is pivotablymounted on a shaft 90 extending from the side wall I. Said resilientroller 80 is rotatably mounted on a shaft 91 which extends from said arm89a. The other arm 89b of said lever 89 is provided with a bent portion890 formed at the foremost end thereof. This bent portion 89c isengageable with the work face formed at said other end portion 870 ofthe intermediate lever 87. A change-over lever 92 having a notch 92a atits one end is pivotably mounted on a shaft 93 which extends from theside wall 1. This notch 92a engages a bent portion 87d formed at anintermediate part of said intermediate lever 87. Said change-over lever92 and said lever 89 pull themselves toward each other by a spring 94which is provided therebetween. A lever 95 having two arms 95a and 95bis pivotably mounted on a shaft 96 extending from the side wall 1 so asto be rotated counter-clockwise by a spring 97. The aforesaid roller 86is rotatably mounted on a shaft 98 which extends from the foremost endportion of one 95a of the two arms of said lever 95. The other 95b ofsaid two arms has a bent portion 950 which is formed at its foremost endportion, and this bent portion 95c is engageable with the work faceformed at the end portion 870 of said intermediate lever 87 Pins 1e and1f which extend from the side wall 1 are intended to limit the movementof the levers 89 and 95. As is seen from FIGS. 7 and 8, a driving motor99 is fixed to the side wall 1. A pulley 99a is mounted on a shaft 99bof said motor 99. A belt 101 is applied to both pulley 99a and a pulleywhich is formed integrally with a toothed wheel 100a. Said pulley 100 isrotatably mounted on a shaft 103 which extends from a plate 102 which,in turn, is fixed to the side wall 1. In FIG. 8, it will be seen that arotatable plate 104 having a bent portion 104a is pivotably mounted onthe shaft 103 so as to be urged to rotate clockwise about said shaft 103by the action of a spring 105. Said rotatable plate 104 is provided witha pin 104b extending therefrom, and this pin l04b is guided by anelongated slot formed in the aforesaid plate 102 by the fact that saidpin 104b is received fixed to the side wall 1, and said change-overlever 106 is urged to rotate counter-clockwise by the action of a spring108. The arm 106a is engageable with the bent portion 1040 of therotatable plate 104. Toothed wheels 109 and 110 are of the samediameter, and they are rotatably mounted on shafts 111 and 112,respectively, which extend from said rotatable plate 104. Toothed wheels114 and 115 having different diameters relative to each other arerotatably mounted on a shutter shaft 113. Said toothed wheel 115 isprovided with clutch pins 115a formed integrally therewith. Toothedwheels 109 and 114, or toothed wheels 110 and 115 are arranged so thattoothed wheels 109 and 114 form a pair and toothed wheels 110 and 115form another pair, and that the two toothed wheels in either one ofthese two pairs will be brought into the state of meshing with eachother as a result of the change-over operation of said change-over lever106. A toothed wheel 116 is of a diameter greater than that of a toothedwheel 117. Between these two toothed wheels is interposed a worm 118,and these three members are united to each other to form an integralassembly. This integral assembly is rotatably mounted on a shaft 119. Atoothed wheel 120 having the identical diameter with the toothed wheel117 is provided'with clutch pins 120a, and this toothed wheel 120 isrotatably mounted on the aforesaid shaft 113. Whereas, a toothed wheel121 having the identical diameter with the toothed wheel 117 isrotatably mounted on a shaft 122, and this toothed wheel 121 meshes withboth of the toothed wheels 117 and 120. A clutch member 123 is mountedon said shutter shaft 113 in such a way that it is united integrallywith said shutter shaft 113 in the direction of rotation of the latterand that it is axially movable, by means ofa key (not shown). Saidclutch member 123 is provided with clutch pins 123a and 123b which areformed on both side faces thereof, and also with a groove 1230 formed inan intermediate portion thereof. Said clutch pins 123a are engageablewith said clutch pins 115a, whereas the clutch pins 123!) are engageablewith the clutch pins 120a. A lever 124 for changing-over the directionof rotation is provided with two arms 124a and 124b, and this lever 124is pivotably mounted on a shaft 125 extending from the side wall 1. Acam plate 126 for changing-over the direction of rotation is providedwith a cam slot 126a and a pin 126b, and this cam plate 126 is mountedon a shaft 127 which rotatably passes through the side wall 1. A pin1240 which extends fromthe foremost end portion of one 124a of the twoarms of said lever 124 engages in the groove 123C formed in anintermediate portion of said clutch member 123. Whereas, a pin 124dextending from the foremost end portion of the other 1241) of the twoarms of said lever 124, engages in the cam slot 126a of said cam plate126. A worm gear 128 is rotatably mounted on a shaft 129 which extendsfrom the side wall 1, and this worm gear 128 meshes with said worm 118.A toothed wheel 130 is formed integrally with a pulley 131, and thisintegral toothed wheel is rotatably mounted on a shaft 132 extendingfrom the side wall 1, and it meshes with said worm gear 128. A belt 133is applied between said pulley 131 and said pulley 76 76. A belt 134 isapplied between said pulley 76 and said pulley 82. A toothed wheel 135is fixed to said shutter shaft 113. A toothed wheel 136 is provided withteeth in number which is the multiplication of the number of the teethof the toothed wheel 135 by integer. This toothed wheel 136 is rotatablymounted on a shaft 137 extending from the side wall 1, and it mesheswith the toothed wheel 135. A toothed wheel 138 is rotatably mounted onsaid shaft 137 and it is coupled integrally with said toothed wheel 136.A ring-like toothed wheel 139 is of an identical diameter and anidentical number of teeth with those of the toothed wheel 138. A toothedwheel 140 is of a projection 140a and is provided with an identicaldiameter and an identical number of teeth with those of the toothedwheel 139, and it is rotatably mounted on the shutter shaft 113. Saidtoothed wheel 139 is rotatably mounted on said projection a of thetoothed wheel 140.

A toothed wheel 141 having an identical diameter and an identical numberof teeth with those of the toothed wheel 135 is rotatably mounted on theshutter shaft 113 and it is coupled integrally with the toothed wheel140. A worm 142 is rotatably mounted on the shutter shaft 113, and it iscoupled integrally with the toothed wheel 140. A worm gear 143 whichmeshes with the worm 142 is coupled integrally with a toothed wheel 144,and it is secured to the shaft 28 on which the lower sprocket wheel 27is mounted. A toothed wheel 145 is rotatably mounted on a shaft 146 andit meshes with the toothed wheel 144. A toothed wheel 147 is secured tothe shaft 6 on which the upper sprocket wheel 5 is mounted, and thistoothed wheel 147 meshes with the toothed wheel 145. As will be bestunderstood from FIGS. 7 and 9, a plate 148 for changing-over the cyclesof rotation is attached, for vertical movement by screws 149 and 150, toa member which, in turn, is secured to the side wall 1 integrallytherewith. This plate 148 is of shafts 151 and 152 and it also has, inthe lower part thereof, a bent portion 148a which has a notch 148bformed in its foremost end. Toothed wheels 153 and 154 each having awide breadth are rotatably mounted on said shafts 151 and 152,respectively. These members are arranged so that, in accordance with thevertical movement of the plate 148, either there is produced the meshingbetween the toothed wheel 153 and the toothed wheels 135 and 141 simultaneously, or there is produced the meshing between the toothed wheel154 and the toothed wheels 139 and 140 concurrently. A click plate 155is secured to a shaft 156 which passes through the side wall 1. Thisclick plate 155 is provided with a pin 157 which, in turn, engages thenotch 148b formed in said plate 148 assigned for changing-over thecycles of rotation. A shutter blade 158 is secured to the shutter shaft113. Click springs 159 and 160 engage the cam plate 126 assigned tochange-over the direction of rotation and also engage the click plate155, respectively. Cams 161 and 162 both of which are intended to causepivotal movement of the claw member 24 are secured to said shutter shaft113 and the shaft 137, respectively. A lever 163 for changing-over thespeed of projection is pivotably mounted on a shaft 164 extending fromsaid plate 148 assigned for changing-over the cycles of rotation, so asto be urged to rotate counter-clockwise by the action of a spring 165.This lever 163 has two stopped portions 163a and 163b which are bothformed in an intermediate part of this lever. One 163a of these twostepped portions is engageable with a pin 166 which extends from amember fixed to the side wall 1. The free end portion 1636 of said lever163 is engageable with a cam 162 which, in turn, is coupled integrallywith the toothed wheel 138. A lever 167 having two arms 167a and 167band being intended for causing'pivotal movement of the claw member 24 ispivotably mounted on a shaft 181 inserted in a shaft-bearing plate 180which, in turn,

, is secured to the side wall 1, so as to be urged to rotatecounter-clockwise, as viewed from FIG. 9, by the action of a spring 168.The foremost end portion 167s of one 167a of said two arms engages saidcam 161, whereas the other 167b of these two arms has a bent portion167d which is formed at its foremost end, and this bent portion 167d isengageable with the stepped portion 163b of said lever 163. As is shownin FIGS. 7 and 10, a lever 169 having three arms 169a, 1691) and 169cand being intended for changing-over the positions of a filter arm 172is pivotably mounted on a shaft 170 extending from the side wall 1, soas to be urged to rotate clockwise by the action of a spring 171. One1690 of these three arms is engageable with the pin 157 of said clickplate 155. Another arm 16% is engageable with a pin 126b of said camplate 126. The third arm 169cis engageable with a projection 1720 of afilter arm 172. This filter arm 172 is pivotably mounted, at its one endportion 172b, on a shaft 174 extending from the supporting plate 57 soas to be urged to rotate about said shaft 174, and furthermore, saidfilter arm 172 is provided with said projection 1720 formed in thevicinity of said shaft 174. A filter 173 is attached to the free end172a of said filter arm 172. A cam 175 for causing pivotal movement ofthe claw member 24 is secured to the shutter shaft 113. Arms 176 and 177for transmitting, to the claw member 24, their movement of causing thepivotal movement ofthe claw member 24 are pivotably mounted, forrotation, on shafts 178a and l78b both of which extend from a regulatorplate 178 which, in turn, is provided on the supporting plate 57 in sucha manner as to slide over this supporting plate 57. These two arms 176and 177 are provided with bulging portions l76b and 177b, respectively,which are formed at intermediate portions of these two arms,respectively. These two arms 176 and 177 both engage the opposite sidesof said cam 175 at the faces of their bulging portions 17611 and l77b.One end of a spring 179 having the other end secured to the claw member24 engages the free end 1760 of the arm 176. Whereas, the free end 1770of the arm 177 is coupled to the claw member 24. The motion pictureprojector having the foregoing arrangement is operated in the manner asdescribed hereunder.

Description will be made first on the automatic rewinding mechanism. Inan ordinary projection, as shown in FIG. 1, the film 4 which has beendelivered from the supply reel 3 is pressed by the upper pressurerollers l2, 13 against the upper sprocket wheel as the film 4 proceeds,so as to be engaged by the sprocket wheel 5, and therefrom the film 4 isfed, by virtue of the counter-clockwise rotation of this upper sprocketwheel 5, so as to pass around the upper guide rollers 14 and 15 andtherefrom to proceed on toward the film gate plate 18. When this film 4enters into the passageway between the film gate plate 18 and thepressure plate 19, it is then fed downwardly intermittently by theaction of the claw member 24 to proceed on further. Then, the film 4 isguided by the lower guide roller 25 to pass between the lower pressurerollers 29, 30 and the lower sprocket wheel 27. By virtue of thecounter-clockwise rotation of this lower sprocket wheel 27, the film 4is then fed at a constant speed. The film 4 is then guided by anotherlower guide roller 34 and is led to the take-up reel in a known manner.Since an erasing head 49 and a reproducing head 50 are arranged so as tobe in pressure contact with said lower sprocket wheel 27, it is possibleto effect either recording or reproduction of sound onto or from thesound track provided on the face of the film 4, as required. Let usassume that the terminal end of the film 4 is secured to the hub (notshown) of the supply reel 3. It will be understood then that, uponcompletion of projection, the film 4 will be tensioned between the upperguide roller 14 and the supply reel 3 owing to the actions of the uppersprocket wheel 5 and the claw member 24. Accordingly, the film feedingmember 7 is caused to make counter-clockwise rotation against the actionof the spring 9. During the course of this counter-clockwise rotation ofthe film feeding member 7, the latter member pushes the pin plunger ofthe switch 72, so that the connection between the motor 99 and the powersource is broken, resulting in that the rotation of the lower sprocketwheel 27 and the movement of the claw member 24 are suspended, therebypreventing the film 4 from its sustaining a damage. On the other hand,the pin 54 extending rearwardly from the film feeding member 7 isbrought into engagement with the upper bent portion 550 of the couplingplate 55 to pull the coupling plate 55 upwardly. Until this movement ofthe coupling plate 55 takes place, the lower end portion 55b (see FIG.2) of said coupling plate 55 was in engagement with the end portion ofan arm 56a of the holding lever 56 which was actuated, by the weakspring 59, to thrust outwardly through the side wall 1, so that thisengagement contributed in keeping said holding lever 56 stationary evenwhen the end portion of the other arm 56b of the holding lever 56 waspushed. Also, the operating plate 36 was urged to rotate clockwise bythe spring 38 having a greater spring force than did the weak spring 59so that the notch 36a of this operating plate 36 was in engagement withthe end face of the arm 56b of the holding lever 56, to maintain theirrelative positions as shown in FIG. 1. As the coupling plate 55 ispulled upwardly as stated above, the engagement between the lower endportion 55b of the coupling plate 55 and the arm 56a of the holdinglever 56 is relieved accordingly, and owing to the fact that the spring38 is of a greater spring force than is the spring 59, the holding lever56 is caused to make clockwise rotation (as seen from FIG. 2), with theresult that the operating plate 36 is rotated continuously until its pin43 hits the stopper plate 71.

During this rotation of the operating plate 36, its pin 43 pushes thework face 60d formed in the lower end portion of the actuator plate 60so that, as a consequence, the latter plate 60 is pushed upwardlyagainst the action of the spring 63, and at the same time, the pressureplate 19 is caused to be pulled up from its position of being inpressure contact with the film gate plate 18 as will be describedhereunder in further detail, so that, as a result, the claw 24a of theclaw member 24 is caused to retreat from the path of the film 4.

More specifically, the two protrusions 64c and 64f of the plate 64 foropening and closing the pressure plate 19 are brought into engagementwith the projections 60b and 600 of the actuator plate 60 (see FIGS. 3through 5) so that the plate 64 for opening and closing the pressureplate 19 is rotated during the course of the upward movement of saidactuator plate 60. Because of the fact that the elongated slots 64c and64d of this plate 64 are in engagement with the pins 20 and 21 of thepressure plate 19, the rotation of said plate 64 causes the pressureplate 19 to be pulled up from the film gate plate 18 against the forcesof the springs 22 and 23, with the sequential result that the foremostend portion 64h of the bent arm 64g ofthe plate 64 pushes the clawmember 24 to rotate the latter member to cause the retreat of the claw24a of the claw member 24 from the path ofthe film 4.

Owing to the upward movement of the actuator plate 60, the arm 60a whichis located in the upper end portion of this plate 60 pushes the pin 54further, so that the film feeding member 7 is retained in its pushed-upstate. During its rotation, the operating plate 36 performs a series ofactions as described above. However, the torque of the spring 38, whichserves as the source of driving force for the operating plate 36 toperform these actions, attenuates progressively with the progress of therotation of the operating plate 36. In order to make up with thisattenuation of spring force of said spring 38, there is provided astronger spring 70 to assist the operating plate 36 in its rotationthrough the intervention of an auxiliary lever 68.

It should be noted that, during projection, even when the pulley 76 isrotated at high speed in the direction of rewinding, there will occurslippage between the pulley 76 and the disk 77, so that the shaft 2 forthe rewinding reel, i.e'., the supply reel (see FIG. 6) is allowed torotate in the reverse direction to follow the reverse feeding of thefilm 4. On the other hand, as the coupling plate 55 is moved upwardly(see FIG. 7) as a result of the aforesaid actions of the relatedmembers, the upper bent portion 55a of this coupling plate 55 will pushthe bent portion 890 of the lever 89 upwardly via the end portion 870 ofthe intermediate lever 87 to rotate said lever 89 counter-clockwise (asviewed from FIG. 7) so that the resilient roller is brought intopressure contact with both of the pulley 76 and the disk 77 to therebycouple the latter two members integrally to each other. whereupon, boththe shaft 2 and the supply reel 3 mounted thereon are rendered almostinstantaneously to the state in which they are allowed to rotate in thedirection in which the film 4 is rewound. Thus, the supply reel 3 is nowrendered to the mode of taking up the film 4. At this moment, theauxiliary lever 68 pushes the pin plunger of the switch 73 to connectthe motor 99 to the power source to start the latter 99. Accordingly,the film 4 which has already been relieved of its engagement with boththe upper and the lower sprockets 5 and 27, the pressure plate 19 andthe claw 24a of the claw member 34 can now be rewound quickly around thereel 3 owing to the high speed rotation of the shaft 2 in the directionof rewinding.

ln starting a projection from the aforesaid state of the projector, itis only necessary to return the position of the operating plate 36 untilthe end portion ofthe arm 56b of the holding lever 56 is brought intoengagement with the notch 36a formed in said operating plate 36.Whereupon, the actuator plate 60 is moved downwardly by the action ofthe spring 63, with the result that the pressure plate 19 and the clawmember 24 are both set free and also that the film feeding member 7 isreturned to its initial position. Furthermore, the coupling plate 55 isalso lowered of its position, resulting in suppressing the end portionof the arm 56a of the holding lever 56 to thereby block the returningmovement of the operating plate 36 to its initial position which thisoperating plate 36 would tend to make by being urged by the spring 38,and thus, the projector as a whole resumes its initial mode ofprojection.

Description will next be directed to the quick film feeding operation,that is to say, an operation for feeding the film 4 at high speed from atake-up reel (not shown) on which the film 4 has been-wound, byreferring to FIGS. 1, 6 and 7. This operation is performed in the mannerdescribed as follows. With the change-over lever 92 being in the stateof having been moved to the right side on FIG. 7 by manipulating a knob(not shown), the film feeding member 7 is pulled upwardly manually.Whereupon, the related members perform a series of sequential actions inthe manner as described in connection with the operation of automaticrewinding of film. During this operation, the notch 920 formed in theforemost end portion of the change-over lever 92 still holds therein theintermediate lever 87. Accordingly, this intermediate lever 87 is causedto move toward the right side, and the foremost end portion 87c of thislever 87 travels toward the right side over the upper bent portion 55aof the coupling plate 55 to eventually engage the bent portion 950 ofthe lever 95, while being relieved ofits engagement with the bentportion 89c of the lever 89. In this state, the pin 54, and accordingly,the foremost end portion 87c of the intermediate lever 87, are bothshifted in their positions upwardly. As a result, the resilient roller86 mounted on the lever 95 is brought into pressure contact with theperipheral edges of both the pulley 82 and the disk 83. Ac-

cordingly, the pulley 82 and the disk 83 are united together as anintegral body, causing the take-up reel (not shown) to be rotated athigh speed. Thus, a quick feeding operation is performed. In order toshift this quick feeding operation to normal feeding, it is onlynecessary to release the change-over lever 92 and to manually return theoperating plate 36 to its initial position. Whereupon, the projectorwill be rendered to the mode of normal projection in the mannerdescribed previously.

The change-over of the speed of projection may be performed in themanner described as follows (see FIGS. 7 and 8). The change-over lever106 is manipulated to rotate the rotatable plate 104 to bring the twotoothed wheels in either one of the two pairs of toothed wheels, namely,wheels 109 and 114, or wheels 110 and 115, to mesh with each other.Whereupon, the toothed wheel 114 is imparted a speed of rotation whichis 24 strips of film per second, whereas the toothed wheel 115 is givena speed of rotation which is 18 strips of film per second. Theswitching-over operation of the change-over lever 106 may be performedeither manually or by the use of a film catridge (not shown) havingnotches for differentiating the projection speed. The mechanism fortransmitting the rotations of the toothed wheels 114 and 115 to theshutter shaft 113 will be described later.

Description will hereunder be made on the reverse projection (see FIG.7). Since the toothed Wheels 115 and 116, and the toothed wheels 117,120 and 121 are all of the same diameter, respectively, it will beunderstood that the toothed wheels 115 and 120 can be rotated in thereverse directions at the same cycle of rotation. On the other hand,between the toothed wheel 115 and the toothed wheel 120, there isprovided a clutch member 123 which is keyed to the shutter shaft 113 soas to be fixed thereto with respect to the direction of rotation butmovable axially. Accordingly, by turning the knob (not shown) of the camplate 126 assigned to changeover the direction of rotation, the clutchmember 123 may be moved sideways via the cam slot 126a and the lever 124assigned for changing-over the direction of rotation. In accordance withthe direction in which this clutch member 123 is moved, the clutch pins123a and 123b of the clutch member 123 are brought into engagement withthe clutch pins a and a of the toothed wheels 115 and 120, respectively.As a result, the shutter shaft 113 and its related members can berotated either in normal direction or in reverse direction.

Description will further be made on the halting of the motion ofprojection and also on a slow-motion projection. First, reference willbe made to FIGS. 7 and 9. The toothed wheel which is secured to theshutter shaft 113 drives, about the shaft 137, the toothed wheel 136having teeth in number multiplied by the number of the teeth of thetoothed wheel 135 with an integer. Owing to the fact that the toothedwheel 138 which is coupled integrally with said toothed wheel 136 is inmesh with the toothed wheel 139 which is slidably mounted on theprojection 140a of the toothed wheel 140 which, in turn, is rotatablymounted on the shutter shaft 113, and that the toothed wheel 138 has thesame diameter with the toothed wheel 139, it will be understood that thetoothed wheel 139 is driven in the same direction of rotation with thetoothed wheel 135 and at the cycle of rotation per second which is l/aninteger of the number of rotation per second of the toothed wheel 135.Now, in case it is intended to perform a normal projection, a knob (notshown) which is secured to the shaft 156 which is integral with theclick plate 155 may be turned so that the plate 148 for changing-overthe cycle of rotation is moved upwardly owing to its engagement with thepin 157. As a result, the toothed wheel 153 meshes simultaneously withboth of the toothed wheels 135 and 141 so that the rotation of thetoothed wheel 135 which is secured to the shutter shaft 113 and whicheffects rotation at normal speed is transmitted to the toothed wheel141. The resultant rotation of the toothed wheel 141 is transmitted tothe worm gear 143 via a toothed wheel 140 which is integrally coupledwith said toothed wheel 141 and with a worm 142, so that the lowersprocket wheel 27 which is secured to the shaft 28 effects rotation offeeding at normal speed. Furthermore, the resultant rotation of the worm143 is transmitted to the toothed wheel 147 via a toothed wheel 144which is integral with said worm gear 143 and a toothed wheel 145 whichis in mesh with the toothed wheel 144, with the result that the uppersprocket wheel 5 effects rotation of feeding at normal speed. Next, whenit is intended to perform a still projection from the foregoing mode ofprojection, a knob (not shown) which is integral with the click plate isturned. Whereupon, the plate 148 for changing-over the cycle of rotationis placed in an intermediate position as shown in FIG. 7, setting bothof the toothed wheels 153 and 154 free. Whereupon, the motion of thetoothed wheel 141 is brought to a halt. As a result, the motions of therelated upper and the lower sprocket wheels 5 and 27 are accordinglybrought to a halt. On the other hand, the cams 161 and 162 for causingpivotal movement of the claw member 24 are moving jointly with theshutter shaft 113, respectively, and the levers 163 and 167 are in thestate of being engageable with these cams 161 and 162, respectively,during the aforesaid operation. The lever 163 which, during normal modeof projection, is slidably mounted on the shaft 164 which extends fromthe plate 148 for changing-over the cycle of rotation will move jointlywith the upwardly moving plate 148. Whereupon, the bent portion 167dformed at the foremost end of the lever drops into the recessed portionof the stepped portion 163b, causing the foremost end portion 167c ofthe said lever 167 to be brought into engagement with the cam 161. As aconsequence, the arm 24b of the claw member 24 is pushed forward once inone complete revolution of said cam 161 to thereby cause the retreat andadvancement of the claw 24a formed at the foremost end of said clawmember 24 to occur relative to the film 4. In the case of a stillprojection, the foremost bent portion 167d of the lever 167 rides on theraised portion of the stepped portion 1630 of the lever 163, and at thesame time, the fixed pin 166 limits the counter-clockwise rotation ofthe lever 163, as shown in FIG. 9, Accordingly, the foremost end portion167 c of the lever 167 always pushes the arm 24!; of the claw member 24,keeping the claw 24a in its position of being withdrawn from the face ofthe film 4. As a consequence, the film 4 will be kept in its position ofbeing at halt, simultaneously as the upper and the lower sprocket wheels5 and 27 are brought to a halt. The arm 169a of the lever 169 whichrotates about the shaft 170, on the other hand, is in engagement withthe pin 157 extending from the click plate 155, and therefore, said arm1690 will be rendered to the state as shown in FIG. 7 in the still modeof projection. Whereas, the arm 1690 of said lever 169 pushes theprojection 1720 of the filter arm 172 upwardly in the manner as shown inFIG. 10 to interpose the filter 173 in the foreground of the projectionwindow. During the mode of normal projection, the pin 157 is caused tomove, so that the lever 169 is accordingly caused to rotate clockwise bythe action of the spring 171, with the result that the arm 1690 of saidlever 169 is caused to retreat from the state of being in engagementwith the projection 1720 of the filter arm 172. Accordingly, the filter173 is caused to retreat from the foreground of the projection window.Also, even when the clutch member 123 is located at an intermediateposition during the aforesaid time in which the direction of rotation isswitched over between the positions for normal and the reverserotations, there will be the fear that the film 4 is brought to a haltfor some time and that said film may sustain a damage from burning. Sucha fear is eliminated by the fact that the cam plate 126 for changingoverthe direction of rotation pushes the arm 16% of the lever 169 by its pin126d which extends from said cam plate 126 to thereby interpose thefilter 173 in the foreground of the projection window for a limitedperiod of time.

When it is intended to perform a slow-motion projection, a knob (notshown) which is integral with the click plate 155 is turned. Whereupon,the plate 148 for changing-over the cycle of rotation is lowered in itsposition. As a result, the toothed wheel 154 is brought into mesh withboth of the toothed wheels 139 and 140 at the same time. As aconsequence, the rotation of the toothed wheel 139 which is rotating atthe speed which is l/an integer (for example, of the number of rotationper second of the shutter shaft 113 will drop the cycles of rotation ofboth of the upper and the lower sprocket wheels 5 and 27 to l/an integerof their cycles via the toothed wheel 140 and the worm 142. On the otherhand, owing to the fact that the toothed wheel 138 which is transmittingthe rotation to the toothed wheel 139 is in the state of being coupledintegrally with the cam 162 which produce a series and fall undulationof its cam face once in its one complete revolution and that the fixedpin 166 for limiting the counter-clockwise movement of the lever 163will move so as to be brought to the recessed portion of the steppedportion 163a of the lever 163 to engage therewith, it will be understoodthat the foremost end portion 1630 of said lever 163 will accordingly beenable to follow the movement of the cam 162. As a result, the saidlever 163 will be able to eliminate the obstruction for the movement ofthe lever 167 at the rate of once in an integral number of completerevolution (for example, three revolutions) of the cam 161. Accordingly,by appropriately setting the relative phasic positions of the cams 161and 162, it will be possible to effect a slow-motion projection in sucha way that the claw member 24 is actuated at the rate of l/an integer ofthe cycles of rotation per second of the shutter shaft 113 in accordancewith the pre-set integral ratio between the toothed wheels 135 and 136.In such an instance, the rotating shutter blade 158 is secured to theshutter shaft 113, and therefore, the flickering condition of projectionin this slowmotion projection is in no way different from the conditionfor the normal projection.

, It should be understood that the projecting mechanism having theaforestated various internal mechanisms can be applied, withoutrequiring any modification, to silent motion picture projectors also.

What is claimed is:

,1. In an automatic film rewinding mechanism in a motion pictureprojector comprising a claw member adapted to be brought into engagementwith the film perforations for feeding the film intermittently, a filmgate plate positioned adjacent said claw member, a film gate formed onsaid film gate plate, a pressure plate urging the film against said filmgate plate, at least one wheel adapted to be rotated at a constant speedfor feeding the film, and a supply reel carrying the wound film whoseterminal end is fixed thereto, the combination comprising:

a film feeding member pivotably arranged at a position above said filmgate plate;

a first spring fixed to said film feeding member for pressing the filmon the wheel through said film feeding member and transmitting therotation of said wheel to said film, said film feeding member beingspaced away from said wheel by the film tensioned between said supplyreel and said claw member upon completion of projection, since theterminal end of said film is fixed to said supply reel;

a first member pivotably arranged at a position below said film gateplate;

a second spring fixed to said first member for urging said first memberin one rotational direction;

a blocking means for blocking said first member against said secondspring during projection;

means engaged with said film feeding member and capable of relieving, asa result of the movement of the film feeding member in becoming spacedaway from said wheel, said blocking means from said first member toallow the rotation of this latter member then positioned for projection;

a second member having an end portion to be coupled to said film feedingmember and said first member, respectively, and to be movablevertically, so that, when this second member is shifted in its positionas a result of the rotation of said first member from the position forprojection, said second member retains said film feeding member in aposition apart from said wheel;

a third member being connected with said pressure plate having engagingparts to be engaged with said second member, and being engageable withsaid claw member for causing said claw member to retreat from the filmface and also for causing the pressure plate to move away from the filmface;

a driving motor for rotating said wheel;

circuit means for connecting the driving motor to a source of electricalpower;

a first switch connected between said power source and said drivingmotor and adapted to be positioned in a contacting state duringprojection and adapted to be positioned in a non-contacting state byvirtue of the movement of said film feeding member parting away fromsaid wheel; and

a second switch connected in parallel with said first switch and adaptedto be positioned to be in the non-connecting state during projection,and adapted to be rendered to the connecting state by virtue of themovement of said first member rotating from its position for projectionfor re winding the film.

2. An automatic film rewinding mechanism according to claim 1, in whichsaid mechanism further comprises a guide member pivotably arranged at aposition above said film gate plate and capable of absorbing the tensionproduced intermittently in the film between said wheel intended forfeeding the film at a constant speed and said claw member for feedingthe film intermittently.

3. An automatic film rewinding mechanism according to claim 1, in whicha loop forming section is provided in said film feeding member to form aloop of film for absorbing therein the tension produced intermittentlyin the film mounted on a shaft provided in parallel relative to saidfilm gate plate and capable of being brought into engagement with saidslidable plate to retain said first member in the position forprojection and adapted to retain said first member in the position forprojection when said fourth member is in engagement with said slidableplate, and adapted to allow the first member to rotate when saidengagement is relieved.

5. An-automatic film rewinding mechanism according to claim I in whichsaid wheel adapted to be rotated at a constant speed for feeding saidfilm is provided one each at positions above and below said film gateplate, and in which said first member is provided with heads for soundarranged so as to be brought into contact with said film duringprojection.

6. An automatic film rewinding mechanism according to claim 1, in whichsaid movement of the film feeding member in becoming spaced away fromsaid wheel is performed by the film tensioned between said supply reeland said claw upon completion of projection owing to the fact that theterminal end of said film is fixed to the supply reel.

t t i t:

1. In an automatic film rewinding mechanism in a motion pictureprojector comprising a claw member adapted to be brought into engagementwith the film perforations for feeding the film intermittently, a filmgate plate positioned adjacent said claw member, a film gate formed onsaid film gate plate, a pressure plate urging the film against said filmgate plate, at least one wheel adapted to be rotated at a constant speedfor feeding the film, and a supply reel carrying the wound film whoseterminal end is fixed thereto, the combination comprising: a filmfeeding member pivotably arranged at a position above said film gateplate; a first spring fixed to said film feeding member for pressing thefilm on the wheel through said film feeding member and transmitting therotation of said wheel to said film, said film feeding member beingspaced away from said wheel by the film tensioned between said supplyreel and said claw member upon completion of projection, since theterminal end of said film is fixed to said supply reel; a first memberpivotably arranged at a position below said film gate plate; a secondspring fixed to said first member for urging said first member in onerotational direction; a blocking means for blocking said first memberagainst said second spring during projection; means engaged with saidfilm feeding member and capable of relieving, as a result of themovement of the film feeding member in becoming spaced away from saidwheel, said blocking means from said first member to allow the rotationof this latter member then positioned for projection; a second memberhaving an end portion to be coupled to saiD film feeding member and saidfirst member, respectively, and to be movable vertically, so that, whenthis second member is shifted in its position as a result of therotation of said first member from the position for projection, saidsecond member retains said film feeding member in a position apart fromsaid wheel; a third member being connected with said pressure platehaving engaging parts to be engaged with said second member, and beingengageable with said claw member for causing said claw member to retreatfrom the film face and also for causing the pressure plate to move awayfrom the film face; a driving motor for rotating said wheel; circuitmeans for connecting the driving motor to a source of electrical power;a first switch connected between said power source and said drivingmotor and adapted to be positioned in a contacting state duringprojection and adapted to be positioned in a noncontacting state byvirtue of the movement of said film feeding member parting away fromsaid wheel; and a second switch connected in parallel with said firstswitch and adapted to be positioned to be in the non-connecting stateduring projection, and adapted to be rendered to the connecting state byvirtue of the movement of said first member rotating from its positionfor projection for rewinding the film.
 2. An automatic film rewindingmechanism according to claim 1, in which said mechanism furthercomprises a guide member pivotably arranged at a position above saidfilm gate plate and capable of absorbing the tension producedintermittently in the film between said wheel intended for feeding thefilm at a constant speed and said claw member for feeding the filmintermittently.
 3. An automatic film rewinding mechanism according toclaim 1, in which a loop forming section is provided in said filmfeeding member to form a loop of film for absorbing therein the tensionproduced intermittently in the film between the wheel intended forfeeding the film at a constant speed and the claw member for feeding thefilm intermittently.
 4. An automatic film rewinding mechanism accordingto claim 1, in which said means capable of relieving the blocking meansfrom said first member comprises a slidable plate arranged for verticalmovement and having one end coupled to said film feeding member, and afourth member pivotably mounted on a shaft provided in parallel relativeto said film gate plate and capable of being brought into engagementwith said slidable plate to retain said first member in the position forprojection and adapted to retain said first member in the position forprojection when said fourth member is in engagement with said slidableplate, and adapted to allow the first member to rotate when saidengagement is relieved.
 5. An automatic film rewinding mechanismaccording to claim 1, in which said wheel adapted to be rotated at aconstant speed for feeding said film is provided one each at positionsabove and below said film gate plate, and in which said first member isprovided with heads for sound arranged so as to be brought into contactwith said film during projection.
 6. An automatic film rewindingmechanism according to claim 1, in which said movement of the filmfeeding member in becoming spaced away from said wheel is performed bythe film tensioned between said supply reel and said claw uponcompletion of projection owing to the fact that the terminal end of saidfilm is fixed to the supply reel.